Slow Cooker Garlic Butter Shrimp

A lot of “slow cooker shrimp” recipes just mean dumping shrimp in for the whole cook time, and shrimp does not survive that — it turns to rubber long before the timer goes off. This version puts the slow cooker to better use: instead of cooking the shrimp low and slow, it slowly melts and infuses a whole stick of butter with garlic, mellowing it into something rich and deeply flavored over an hour or two. The shrimp gets a quick sear on the stove, just a couple of minutes, then goes into the warm garlic butter right before serving. Keep the whole thing on warm at a party, and it stays perfect for dipping bread into for as long as it lasts.

Why This Slow Cooker Garlic Butter Shrimp Works

The slow cooker infuses the butter, not the shrimp. A long, low melt mellows raw garlic into something rounder and sweeter, which is exactly what a slow cooker is good at.
The shrimp gets real heat, just not from the crock. A quick stovetop sear cooks it properly in minutes, the way shrimp actually needs.
Perfect for serving warm over time. Once combined, the slow cooker holds everything at serving temperature for a party without overcooking the shrimp further.
Genuinely rich flavor for very little effort. Most of the “work” is butter melting on its own.

What You’ll Need

You’ll want a small slow cooker (1.5 to 3 quarts works well for this amount) and a skillet for searing the shrimp.

1 pound large raw shrimp, peeled and deveined
1 cup (2 sticks) unsalted butter, cubed
8 cloves garlic, minced
1 lemon, juiced and zested
1/2 teaspoon red pepper flakes, optional
1 teaspoon Italian seasoning (or a mix of chopped fresh parsley and thyme)
Salt and black pepper, to taste
Crusty bread, for serving

Step-by-Step Instructions

Start the garlic butter. Add the butter, garlic, lemon zest, red pepper flakes, and Italian seasoning to the slow cooker.
Infuse low and slow. Cover and cook on LOW for 1 to 2 hours, stirring occasionally, until the butter is fully melted and the garlic smells sweet and mellow rather than sharp.
Season the shrimp. While the butter infuses, season the shrimp with salt and pepper.
Sear the shrimp. About 15 minutes before serving, heat a skillet over medium-high heat and sear the shrimp 1 1/2 to 2 minutes per side, until pink, opaque, and curled into a “C” shape.
Combine. Stir the lemon juice into the warm garlic butter, then add the cooked shrimp, tossing to coat.
Serve warm. Switch the slow cooker to WARM and serve directly from it with crusty bread for dipping.

Pro Tips

Don’t skip searing the shrimp separately. Adding raw shrimp straight to the slow cooker, even at the end, doesn’t give it the direct heat it needs to cook through quickly and evenly.
Stir the butter occasionally while it infuses. Garlic can settle and scorch slightly against the hot base of some slow cookers if it’s left completely undisturbed.
Taste the butter before adding the shrimp. This is the point to adjust salt, red pepper flakes, or lemon to your liking.
Keep it on WARM, not LOW, once the shrimp is in. LOW will continue actively cooking the shrimp; WARM just holds the temperature for serving.
Serve within an hour or two for the best texture. Shrimp held warm for a very long stretch will gradually firm up, even on WARM.

Variations & Alternatives

Extra garlicky: Push the garlic up to 10 or 12 cloves for a bolder, more pronounced flavor.
White wine addition: Stir in 2 tablespoons of dry white wine along with the lemon juice for extra depth.
Spicier version: Double the red pepper flakes, or add a dash of hot sauce.
Turn it into dinner: Serve over pasta or rice instead of bread, spooning extra garlic butter over the top.

Storage & Reheating

Refrigerate leftovers in an airtight container for up to 3 days; the butter will solidify in the fridge and melt back down when reheated. Reheat gently in a saucepan over low heat, stirring often, or in short microwave bursts. This dish doesn’t freeze particularly well once the shrimp is mixed in, since the texture suffers on thawing.

FAQ

Can I cook the shrimp directly in the slow cooker instead of searing it? It’s not recommended. Shrimp needs quick, direct heat to cook properly; even a short stint in a slow cooker’s gentler heat tends to leave it undercooked in the center or overcooked on the outside by the time it’s done.

Why infuse the butter for so long if the shrimp only needs a few minutes? The long, low heat is specifically for the garlic — it mellows and sweetens over time in a way that a quick sauté can’t fully replicate.

Can I make the garlic butter ahead of time? Yes. Make it a day or two ahead, refrigerate it, then reheat gently in the slow cooker or on the stove before adding the freshly seared shrimp.

How long can this stay on WARM for a party? An hour or two is ideal for the best shrimp texture; beyond that, the shrimp gradually firms up even on the warm setting.